[balloon-makers] 1/2 inch seams
skyfun at ncia.net
skyfun at ncia.net
Mon Apr 23 11:27:41 CDT 2001
With the proper tools darn near any schmuck can make good 1/2" seams.... I know since I am one of those schmucks.
All that is necessary is to take some of your fabric to a good sewing machine shop such as Augers & Sons in Rchester NH, tell them you want a folder for a 1/2" seam or whatever size you want and they will have one made for you at some secret attachment makers place. Works great and the price was reasonable. It is a lot easier than trying to fold it by hand.
> From: Keith Sproul <ksproul at rci.rutgers.edu>
> To: balloon-makers at deering.org
> Date: Mon, 23 Apr 2001 12:58:17 -0400
> Subject: Re: [balloon-makers] 1/2 inch seams
> It is amazing how much difference 1/4" can make.. To make 1/2"
> seams, you would need a 3/8" gauge sewing machine. Jon R. has a 3/8"
> machine. This is the SMALLEST recommended gauge to use for balloons.
> I agree, 1/2" seams would be REAL tough to get consistent until you
> have had a lot of experience.. (aka Micki)
> At 10:50 -0400 4/23/01, Tom Deering wrote:
> >I did a comparison of two envelopes. One with 1/2 inch seams, and
> >one with standard 3/4 inch seams. Given the same limited fabric
> >width, the envelope with the 1/2 inch seams can be made 1,149 cu ft
> >larger, and will lift 21 lbs more.
> >Assuming you make the gores the full width of your fabric, it would
> >be possible to make the half-gores 1/2 inch wider, and create a
> >larger envelope. That doesn't seem like much, but multiplied by 32
> >half gores, it adds up.
> >These numbers, by the way, are for a vertical gore balloon. The
> >fabric lost within the seams of a horizontal gore balloon is much
> >greater, so the difference would be even more pronounced.
> >Could I make good 1/2 inch seams? I don't think I could. But it is
> >interesting to see how that little 1/4 inch changes the design.
> >Please do not assume I know what I'm talking about. Pretend I know
> >nothing. It works for my wife. -------
> >This list is archived at http://www.hombc.org/balloon-makers
> Keith Sproul ksproul at rci.rutgers.edu WU2Z
> Student Housing Network Coordinator 732 445-3695 W
> Rutgers University Computing Services
> This list is archived at http://www.hombc.org/balloon-makers
This list is archived at http://www.hombc.org/balloon-makers
More information about the Balloon-makers